<template>
    <div class="login_container">
        <div class="login_box">
            <!-- 头像区域 -->
            <div class="avatar_box">
                <img src="../assets/logo.png" alt="">
            </div>
            <!-- 登录表单区域 -->
            <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0px" class="login_form">
                <!-- 用户名 -->
                <el-form-item prop="username">
                    <el-input prefix-icon="iconfont icon-user" v-model="loginForm.username"></el-input>
                </el-form-item>
                <!-- 密码 -->
                <el-form-item prop="password">
                    <el-input prefix-icon="iconfont icon-3702mima" v-model="loginForm.password"
                        type="password"></el-input>
                </el-form-item>
                <el-form-item class="btns">
                    <el-button type="primary" @click="login">登录</el-button>
                    <el-button type="info" @click="resetLoginForm">重置</el-button>
                </el-form-item>


            </el-form>
        </div>
    </div>
</template>
<script>
export default {
    data() {
        return {
            //这是登录表单的数据绑定对象
            loginForm: {
                username: '',
                password: ''
            },
            loginFormRules: {
                username: [
                    { required: true, message: '请输入登录名称', trigger: 'blur' },
                    { min: 2, max: 5, message: '长度在 2 到 5 个字符', trigger: 'blur' }
                ],
                password: [
                    { required: true, message: '请输入密码', trigger: 'blur' },
                    { min: 5, max: 15, message: '长度在 5 到 15 个字符', trigger: 'blur' }
                ]


            }
        }
    },

    methods: {
        //点击重置按钮,重置登录表单
        resetLoginForm() {
            // console.log(this);
            this.$refs.loginFormRef.resetFields()

        },
        login() {
            //当下面代码 取消注释时 在 valid 前面加个  async
            this.$refs.loginFormRef.validate(async valid => {
                if (!valid) return
                const { data: res } = await this.$http.post("login", this.loginForm)
                if (res.meta.status !== 200) return this.$message.error('登录失败')
                this.$message.success('登录成功')
                window.sessionStorage.setItem('token', res.data.token)
                this.$router.push('/home')
            })

        }

    }
}
</script>
<style lang="less" scoped>
.login_container {
    background-color: #2b4b6b;
    height: 100%;
    position: relative;

}

.login_box {
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);

    .avatar_box {
        height: 130px;
        width: 130px;
        border: 1px solid #eee;
        border-radius: 50%;
        padding: 10px;
        box-shadow: 0 0 10px #ddd;
        position: absolute;
        left: 50%;
        transform: translate(-50%, -50%);
        background-color: #fff;

        img {
            width: 100%;
            height: 100%;
            border-radius: 50%;
            background-color: #eee;
        }
    }
}

.login_form {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 20px;
    box-sizing: border-box;

    .btns {
        display: flex;
        justify-content: flex-end;
        right: 20px;
    }

}
</style>